如何在表单提交中验证Google reCaptcha [英] How to Validate Google reCaptcha on Form Submit

问题描述

最近，Google彻底改革了他们的reCaptcha API并将其简化为一个复选框。 $ b

问题是，我可以提交包含reCaptcha的表单而不检查它，表单将忽略reCaptcha。

在您使用私钥等将表单发送到PHP文件之前，我在开发人员指南中没有看到任何提及。我不知道如何验证表单，以确保新的reCaptcha是由用户填写的。

我是否错过了一些东西？这个PHP文件仍然需要私钥吗？

到目前为止，我对reCaptcha的所有信息是：

 < div data-type =imageclass =g-recaptchadata-sitekey =My Public Key>< / div> 
  

解决方案

如果您想检查用户是否点击我不是机器人复选框，您可以使用reCaptcha API提供的 .getResponse（）函数。

如果用户没有验证自己，它将返回一个空字符串，如下所示：

  if（grecaptcha.getResponse（）==）{
 alert（You can not proceed！）; 
} else {
 alert（Thank you）; 
} 
  

在用户验证自己的情况下，响应将是一个非常长的字符串。

有关API的更多信息，请参阅此页面： reCaptcha Javascript API

Recently, Google completely overhauled their reCaptcha API and simplified it to a single checkbox.

The problem is, I can submit a form with the reCaptcha included without checking it and the form will ignore the reCaptcha.

Before you had to send the form to a PHP file with the private key et al, but I'm not seeing any mention of that in their Developer's Guide. I have no idea how to validate the form to be sure the new reCaptcha was filled by the user.

Am I missing something? Is that PHP file with the private key still required?

All I have for the reCaptcha so far is:

<div data-type="image" class="g-recaptcha" data-sitekey="My Public Key"></div>

解决方案

If you want to check if the User clicked on the I'm not a robot checkbox, you can use the .getResponse() function provided by the reCaptcha API.

It will return an empty string in case the User did not validate himself, something like this:

if (grecaptcha.getResponse() == ""){
    alert("You can't proceed!");
} else {
    alert("Thank you");
}

In case the User has validated himself, the response will be a very long string.

More about the API can be found on this page: reCaptcha Javascript API

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